Author/Authors :
Safi، S. نويسنده Ph. D Student, Textile Engineering Department, Isfahan University of Technology, P.O. Box: 84156, Isfahan , , Yazdani-rad، R. نويسنده , , Kazemzade، A. نويسنده Ceramic Department, Materials and Energy Research Center, Karaj, Iran. , , Safaei-Naeini، Y. نويسنده Department of Material, Majlesi Branch, Islamic Azad University, Majlesi, Iran. , , Khorasanizadeh، F. نويسنده School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran. ,
Abstract :
C-SiC composites with carbon-based mesocarbon microbeads (MCMB) preforms are new type of highpreformance
and high-temperature structural materials for aerospace applications. In this study MCMB-SiC
composites with high density (2.41 g.cm-3) and high bending strength (210 MPa,) was prepared by cold isostatic press
of mixed mesophase carbon powder derived from mesophase pitch with different amount (0, 2.5, 5%) nano SiC
particles. All samples were carbonized under graphite bed until 1000 °C and finally liquid silicon infiltration (LSI).
Microstructure observations resultant samples were performed by scanning electron microscopy and transition
electron microscopy (SEM & TEM). Density, porosity and bending strength of final samples were also measured and
calculated. Results indicates that the density of samples with nano additive increased significantly in compare to the
free nano additives samples.
